5.25inch to 6 inch Universal Depth Extender  Round Speaker Depth Extender  Adds 1inch Depth  Sold as pair  Works for some 6-1/2" speakers but some 6.5" use a larger frame and require a larger cutout. We call these 6-3/4" speakers, and they won't fit in this bracket. This bracket will only work with speakers that require a cutout diameter of 5-1/8" or less. Brand NEW